Side by side

Borealis Watch Co. JamantavsSpinnaker Challenger Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Jamanta
Borealis Watch Co.Jamanta
MSRP $415
See the full Jamanta
Challenger Automatic
SpinnakerChallenger Automatic
MSRP $289
See the full Challenger Automatic
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At a glance

9 of 29 specs differ
Diameter
Jamanta42.5mm
Challenger Automatic42mm
Power Reserve
Jamanta—
Challenger Automatic—
Water Resistance
Jamanta300m
Challenger Automatic200m
MSRP
Jamanta$415
Challenger Automatic$289

Full specifications

Case

5 specs
Diameter
42.5mm
42mm
Thickness
13.3mm
19mm
Lug-to-Lug
50.4mm
49.5mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
—
Blue
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9015
Seiko NH35

Pricing

1 specs
MSRP
$415
$289
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